author = "Tablero Crespo, César"

Encontrado 92 documentos, página mostrada 1 de 10

Optical absorption analysis of quaternary molybdate- and tungstate-ordered double perovskites

Description: Quaternary-ordered double perovskite A2MM’O6 (M=Mo,W) semiconductors are a group of materials with a variety of photocatalytic and optoelectronic applications. An analysis focused on the optoelectronic properties is carried out using first-principles density-functional theory with several U orbital-...
Language(s): Español

Microscopic Analysis and Applications of the Cu(Sb,Bi)S2 High Optical Absorption

Description: Ternary Cu(Sb,Bi)S2 semiconductors are a group of materials with a wide variety of applications, especially photovoltaic. An analysis of the structural, electronic, and optical properties obtained from first-principles is presented. The microscopic justification of the high absorption coefficients i...
Language(s): Español

Optical absorption and applications of the ABO4 (A=Ca, Pb and B= Mo, W) semiconductors

Description: Ternary molybdates and tungstates ABO4 (A=Ca, Pb and B= Mo, W) are a group of materials that could be used for a variety of optoelectronic applications. We present a study of the optoelectronic properties based on first-principles using several orbitaldependent one-electron potentials applied to sev...
Language(s): Español

Photovoltaic application of the V, Cr and Mn-doped cadmium thioindate

Description: The CdIn2S4 spinel semiconductor is a potential photovoltaic material due to its energy band gap and absorption properties. These optoelectronic properties can be potentiality improved by the insertion of intermediate states into the energy bandgap. We explore this possibility using M = Cr, V and Mn...
Language(s): Inglés

Ionization energies of amphoteric-doped Cu2ZnSnS4: Photovoltaic application

Description: The substitution of Cu, Sn or Zn in the quaternary Cu2ZnSnS4 semiconductor by impurities that introduce intermediate states in the energy bandgap could have important implications either for photovoltaic or spintronic applications. This allows more generation–recombination channels than for the host...
Language(s): Inglés

Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4

Description: The substitution of cation atoms by V, Cr and It in the natural and synthetic quaternary Cu2ZnSnS4 semiconductor is analyzed using first-principles methods. In most of the substitutions, the electronic structure of these modified CZTS is characterized for intermediate bands with different occupation...
Language(s): Inglés

Optoelectronic property analysis of MCrO4 (M=Ba, Sr) with a response to visible light irradiation

Description: Ternary MCrO4 (M = Ba, Sr) semiconductors are materials with a variety of photocatalyst and optoelectronic applications. We present detailed microscopic analyses based on first principles of the structure, the electronic properties and the optical absorption in which the difference between symmetric...
Language(s): Inglés

Effect of the oxygen isoelectronic substitution in Cu2ZnSnS4 and its photovoltaic application

Description: The optoelectronic properties of Cu2ZnSnS4 and environmental considerations have attracted significant interest for photovoltaics. Using first-principles, we analyze the possible improvement of this material as a photovoltaic absorber via the isoelectronic substitution of S with O atoms. The evoluti...
Language(s): Inglés

Ionization levels of doped copper indium sulfide chalcopyrites

Description: The electronic structure of modified chalcopyrite CuInS2 has been analyzed from first principles within the density functional theory. The host chalcopyrite has been modified by introducing atomic impurities M at substitutional sites in the lattice host with M = C, Si, Ge, Sn, Ti, V, Cr, Fe, Co, Ni,...
Language(s): Inglés

Electronic and photon absorber properties of Cr-Doped Cu2ZnSnS4

Description: The Cu2ZnSnS4 (CZTS) semiconductor is a potential photovoltaic material due to its optoelectronic properties. These optoelectronic properties can be potentially improved by the insertion of intermediate states into the energy bandgap. We explore this possibility using Cr as an impurity. We carried o...
Language(s): Inglés

Encontrado 92 documentos, página mostrada 1 de 10

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